| Presentation | 2016-05-21 The influences of deterioration of reflective marker used in optical motion capture system on measurement accuracy. Masashi Oobuchi, Toyohiko Hayashi, Shigehito Tanahshi, Hiroshi Tanaka, Hiroaki Inui, Hiroki Ninomiya, Katsuya Nobuhara, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Optical motion capture system is a device to analyze the motion of bodies, such as human motion. By measuring infrared light reflective markers secured to the object by means of more than or equal to two motion cameras, we can obtain time-series data of 3-dimensional coordinates of the makers. One of the problems of this measurement is that repetitive use of the markers gradually increases measurement error due to the separation and/or corruption of a reflective material. The relationship between such marker deterioration and measurement error, however, has yet to be clarified quantitatively. Then as its basic study, we made several models of partial loss of the reflector, and investigated the relationship between each deterioration pattern and measurement error quantitatively using a set of two motion cameras mutually arranged perpendicularly. Empirical results suggested that 1) the partial loss of the reflector makes the detected position of the marker image deviate, causing measurement error, and 2) there is a possibility that the measurement error could be estimated from the shape, area and position of the partial loss image. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Infrared light reflective marker / Optical motion capture system / Marker deterioration / Measurement accuracy |
| Paper # | MBE2016-6 |
| Date of Issue | 2016-05-14 (MBE) |
| Conference Information | |
| Committee | MBE / NC |
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| Conference Date | 2016/5/21(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | University of Toyama |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Tetsuo Kobayashi(Kyoto Univ.) / Toshimichi Saito(Hosei Univ.) |
| Vice Chair | Yutaka Fukuoka(Kogakuin Univ.) / Shigeo Sato(Tohoku Univ.) |
| Secretary | Yutaka Fukuoka(akita noken) / Shigeo Sato(Kogakuin Univ.) |
| Assistant | Takenori Oida(Kyoto Univ.) / Ryota Horie(Shibaura Inst. of Tech.) / Hiroyuki Kanbara(Tokyo Inst. of Tech.) / Hisanao Akima(Tohoku Univ.) |
| Paper Information | |
| Registration To | Technical Committee on ME and Bio Cybernetics / Technical Committee on Neurocomputing |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | The influences of deterioration of reflective marker used in optical motion capture system on measurement accuracy. |
| Sub Title (in English) | |
| Keyword(1) | Infrared light reflective marker |
| Keyword(2) | Optical motion capture system |
| Keyword(3) | Marker deterioration |
| Keyword(4) | Measurement accuracy |
| 1st Author's Name | Masashi Oobuchi |
| 1st Author's Affiliation | Niigata university(Niigata Univ.) |
| 2nd Author's Name | Toyohiko Hayashi |
| 2nd Author's Affiliation | Niigata university(Niigata Univ.) |
| 3rd Author's Name | Shigehito Tanahshi |
| 3rd Author's Affiliation | Niigata university(Niigata Univ.) |
| 4th Author's Name | Hiroshi Tanaka |
| 4th Author's Affiliation | Nobuhara Hospital and Institute of Biomechanics(Nobuhara Hospital) |
| 5th Author's Name | Hiroaki Inui |
| 5th Author's Affiliation | Nobuhara Hospital and Institute of Biomechanics(Nobuhara Hospital) |
| 6th Author's Name | Hiroki Ninomiya |
| 6th Author's Affiliation | Nobuhara Hospital and Institute of Biomechanics(Nobuhara Hospital) |
| 7th Author's Name | Katsuya Nobuhara |
| 7th Author's Affiliation | Nobuhara Hospital and Institute of Biomechanics(Nobuhara Hospital) |
| Date | 2016-05-21 |
| Paper # | MBE2016-6 |
| Volume (vol) | vol.116 |
| Number (no) | MBE-58 |
| Page | pp.pp.29-34(MBE), |
| #Pages | 6 |
| Date of Issue | 2016-05-14 (MBE) |